H. Bunt, M. Kipp, M. Maybury, and W. Wahlster. Multimodal Intelligent Information Presentation, volume 27 of Text, Speech and Language Technology, Springer, Dordrecht, (2005)
C. Cattuto, D. Benz, A. Hotho, and G. Stumme. The Semantic Web -- ISWC 2008: 7th International Semantic Web Conference, Karlsruhe, Germany, volume 5318 of Lecture Notes in Computer Science, Springer, Berlin, (2008)